System and method for communicating location and direction specific information to a vehicle
DCFirst Claim
1. A system for communicating a message to a vehicle, comprising:
- (a) transmitter means for communicating a message signal to the vehicle, said message signal including at least one message, said message indicating an intended location and intended direction of travel for which said message is to be provided to an operator of the vehicle, said intended direction of travel being represented by a sequence of predetermined locations; and
(b) a receiver system mounted on the vehicle, said receiver system including(1) position means for determining vehicle positions,(2) receiver means for receiving said message signal from said transmitter means and for extracting said message from said message signal, and(3) processor means for receiving said message from said receiver means, for receiving said vehicle positions from said position means, and for determining whether to provide said message to said operator of the vehicle based upon a comparison of said intended location and said intended direction of travel with said vehicle positions.
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Abstract
A system and method for providing information to the operator of a land, water or airborne vehicle includes a wide-area message transmitter for transmitting messages to the vehicle and a vehicle-based receiver system. Each message includes identification information specifying a location (including a direction of travel) for which the message is intended. The receiver system on the vehicle computes its position and direction of travel and compares the position of the vehicle to the intended location indicated by each message. When a match is found, the receiver system provides the matching message to the operator of the vehicle. The messages are digitized voice messages. In a preferred embodiment, the vehicle-based receiver system calculates its position and direction of travel using either GPS or signals received from a local transmitter site.
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Citations
25 Claims
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1. A system for communicating a message to a vehicle, comprising:
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(a) transmitter means for communicating a message signal to the vehicle, said message signal including at least one message, said message indicating an intended location and intended direction of travel for which said message is to be provided to an operator of the vehicle, said intended direction of travel being represented by a sequence of predetermined locations; and (b) a receiver system mounted on the vehicle, said receiver system including (1) position means for determining vehicle positions, (2) receiver means for receiving said message signal from said transmitter means and for extracting said message from said message signal, and (3) processor means for receiving said message from said receiver means, for receiving said vehicle positions from said position means, and for determining whether to provide said message to said operator of the vehicle based upon a comparison of said intended location and said intended direction of travel with said vehicle positions. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for communicating a message to a vehicle, comprising:
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(a) wide-area transmitter means for communicating a message signal to the vehicle, said message signal including at least one message, said message indicating an intended location and intended direction of travel; (b) a local transmitter site including (1) a first transmitter located near an expected path of the vehicle for transmitting a first signal toward the expected path, and (2) a second transmitter located near the expected path for transmitting a second signal toward the expected path; and (c) a receiver system mounted on the vehicle, said receiver system including (1) position means for determining a position and direction of travel of the vehicle, said position means including (i) means for receiving said first and second signals, and (ii) means for determining an order of receipt by said receiver system of said first and second signals, wherein receipt of said first and second signals indicates said vehicle position and order of receipt indicates said direction of travel, (2) receiver means for receiving said message signal from said transmitter means and for extracting said message from said message signal, and (3) processor means for receiving said message from said receiver means, for receiving said vehicle position and said direction of travel from said position means, and for determining whether to provide said message to an operator of the vehicle based upon a comparison of said intended location and said intended direction of travel with said vehicle position and direction of travel. - View Dependent Claims (9)
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10. A system for communicating a message to a vehicle traveling on a roadway, comprising:
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a first transmitter located near the roadway for transmitting a first signal toward the roadway; a second transmitter located near the roadway for transmitting a second signal toward the roadway; and a receiver on the vehicle for receiving said first and second signals when the vehicle is in proximity to said first and second transmitters and for determining whether to provide a first message to a driver of the vehicle based upon the order of receipt of said first and second signals by said receiver. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method for communicating a message to a vehicle traveling on a roadway, comprising:
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transmitting a first signal to the vehicle from a first transmitter; transmitting a second signal to the vehicle from a second transmitter; receiving said first and second signals at the vehicle when the vehicle is in proximity to said first and second transmitters; and determining whether to provide a first message to a driver of the vehicle based upon the order of receipt of said first and second signals. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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Specification